Abstract:In recent years, the application of Bluetooth devices has become increasingly widespread. If there are vulnerabilities in Bluetooth devices, it may lead to information leakage, economic losses, and other consequences. However, the firmware updates for Bluetooth devices are often delayed, and some cannot even perform hot updates. Currently, there is a relative lack of tools … Read more
1. The Concept of “Memory Alignment” Memory alignment, also known as byte alignment, is an attribute of the memory address where a data type can be stored. This attribute is essentially the memory address itself, which must conform to certain specifications. This specification states that the memory address value must be a power of 2. … Read more
As the electronic architecture of vehicles enters an upgrade cycle, various levels of supporting software have become the focus of competition among suppliers. Among them, in the underlying RTOS part, BlackBerry QNX currently occupies a major market share, while companies like Huawei, Zhaoma, Wind River (acquired by Aptiv), and Horizon are also vying for market … Read more
I get busy as soon as I arrive at the office every day. I need to wash my cup, choose the tea I brewed today, then go get hot water, tidy up my desk, charge my phone, turn on the computer, check today’s work tasks, browse the work group, and then I feel tired. I … Read more
Reprinted from Linux Fan What operating systems are generally used on airplanes? This is the answer many people have been wanting to know. This section is based on an answer from V friends reprinted from Baidu Zhidao: Aerospace software is not mysterious; from a computer architecture perspective, it is not much different from ordinary computer … Read more
Introduction: The tech industry has devoted a significant amount of time to the IoT craze. For-profit tech companies and members of the open-source community are promoting their respective operating systems, claiming to be the best fit for various IoT applications. However, not every operating system is suitable for all IoT purposes. As a result, there … Read more
Original from WeChat Official Account | Embedded Column “Circular queue” and “message queue” are widely used in the embedded field, and experienced embedded software engineers are likely familiar with them. However, beginners often have related questions. Today, I will share some content about “circular queues” and “message queues”. Circular Queue A circular queue is a … Read more
1. The Concepts of Synchronization and Mutual Exclusion To understand synchronization and mutual exclusion in one sentence: I wait for you to finish using the bathroom before I use it. What is synchronization? It is: Hey, I am using the bathroom, please wait. What is mutual exclusion? It is: Hey, I am using the bathroom, … Read more
When debugging with RTOS, CLion provides views for FreeRTOS, Azure RTOS, and Zephyr tasks (threads). For FreeRTOS, you can also explore objects and the heap. Some gdb servers have built-in support for different RTOS. To ensure proper integration with CLion, make sure to disable built-in support on the gdb server side. To enable the RTOS … Read more
In the previous article, we used FreeRTOS to light up an LED, which essentially got FreeRTOS running. To effectively use an RTOS, it is necessary to understand how the scheduler works from a black-box perspective. Of course, if you want to study its internal implementation, you can read the source code. However, I feel that … Read more